eas is proud to offer the OEM exhaust mod for you e9x m3. We have units on hand ready to be installed, this means no waiting or downtime. Each muffler is carefully opened up on the top portion routing the piping straight through to give a much louder and throatier tone with the OEM look. Best part is you keep the OEM look with no evidence of modification. You great a great sounding exhaust at a fraction of the price.